Subordination by convex functions

oleh: Rosihan M. Ali, V. Ravichandran, N. Seenivasagan

Format: Article
Diterbitkan: Wiley 2006-01-01

Deskripsi

For a fixed analytic function g(z)=z+∑n=2∞gnzn defined on the open unit disk and γ<1, let Tg(γ) denote the class of all analytic functions f(z)=z+∑n=2∞anzn satisfying ∑n=2∞|angn|≤1−γ. For functions in Tg(γ), a subordination result is derived involving the convolution with a normalized convex function. Our result includes as special cases several earlier works.